React 中的前端路由 react-router-dom

安装react路由

npm install react-router-dom --save

 

 

准备好两个组件页面 counter.js和mybtn.js，作为演示使用

修改index.js

import react from 'react';
import reactdom from 'react-dom';
import './index.css';
import * as serviceworker from './serviceworker';
import 'antd/dist/antd.css'; // or 'antd/dist/antd.less'
import {browserrouter,route,link} from 'react-router-dom';
import counter from './counter';
import buttonsize from './mybtn';

/* <app />是jsx语法，需要react的支持 */
reactdom.render(
    <browserrouter>
      <div>
        <route path="/counter" component={counter} />
        <route path="/mybtn" component={buttonsize} />
      </div>
    </browserrouter>,
  document.getelementbyid('root')
);

// if you want your app to work offline and load faster, you can change
// unregister() to register() below. note this comes with some pitfalls.
// learn more about service workers: https://bit.ly/cra-pwa
serviceworker.unregister();

 

输入网址即可定位到指定页面

 

 

 

 

在某个页面使用link组件可以定义链接

mybtn.js

import react,{component} from 'react';
import { button, radio } from 'antd';
import { downloadoutlined } from '@ant-design/icons';
import {link} from 'react-router-dom';

class buttonsize extends react.component {
    state = {
      size: 'large',
    };
  
    handlesizechange = e => {
      this.setstate({ size: e.target.value });
    };
  
    render() {
      const { size } = this.state;
      return (
        <div>
          <radio.group value={size} onchange={this.handlesizechange}>
            <radio.button value="large">large</radio.button>
            <radio.button value="default">default</radio.button>
            <radio.button value="small">small</radio.button>
          </radio.group>
          <br />
          <br />
          <button type="primary" size={size}>
            primary
          </button>
          <button size={size}>default</button>
          <button type="dashed" size={size}>
            dashed
          </button>
          <br />
          <link to="/counter">
            <button type="link" size={size}>
                return last page
            </button>
          </link>
          <br />
          <button type="primary" icon={<downloadoutlined />} size={size} />
          <button type="primary" shape="circle" icon={<downloadoutlined />} size={size} />
          <button type="primary" shape="round" icon={<downloadoutlined />} size={size} />
          <button type="primary" shape="round" icon={<downloadoutlined />} size={size}>
            download
          </button>
          <button type="primary" icon={<downloadoutlined />} size={size}>
            download
          </button>
        </div>
      );
    }
  }
  
 export default buttonsize;

 

 点击返回列表页

 

关于路由的参数

修改index.js

 

 修改mybtn.js

 

 在counter.js中接收参数